Grip-tread and mud-shoe for automobiles.



c. v. PUGH. GRIP TREAD AND MUD SHOE FOR AUTOMOBILES.

APPLICATION FILED MAB.'22, 1911.

1,028,490. 7 Patented June 4, 1912.-

6 2 fj g UNITED STATES. PATENT OFFICE.

CORTEZV. PUGH, OF ST. LOUIS, MISSOURI, ASSIGNOR FOUR-EIGHTEENTHS TO EDWARD BROCKSCHMITT, FOUR-EIGHTEENTHS TO ARVILLE A VAN CLEAVE, AND FOUR-EIGHTEENTHS T0 JOHN SCHULZ, ALL ST. LOUIS, MISSOURI.

GRIP-TREAD AND MUD-SHOE FOR AUTOMOBILES.

To all-whom it may concern: Be it known that I, Conrnz V. PUGH, a citizen of the United States, residing. at St. Louis, in the State of Missouri, have invented certain new and useful Improvements in Grip-Treads and Mud-Shoes for- Aut0m0biles, of which the following is a Another object is to provide an improved device of this character which embodies to fit the curved wall of the tire, and with a depending keel or blade 7 which, when the mudshoes of improved construction, and improved means for mounting said mud shoes upon thewheel.

Other andfurther objects will appear in the specification and be specifically pointed ,out in the appended claim, reference being ings, the portion of a wheel of well knowntype is shown having a felly 1, tire grip-..

ping rim 2, and tire 3. Extending around the peripheryv of the tire on either side thereof, are endless chains 4, while at regular intervals around the outer lateral face rtread of the tire 3 are disposed a plujrality of mud .shoes 5, there beinga series of these mud shoes on each side of the tire, as shown in Figs. 2 and 4. As shown in Fig. 3, each of saidmud shoes comprises a base plate 6 having its inner face'concaved Specification of Letters Patent.

Patented June 4., 1912.

Application filed March 22, 1911. Serial No. 616,111.

shoes are mounted in oppositely disposed pairs, projects vertically down, as shown in Fig. 2. On the outer flat wall of each of said shoes, are disposed a pair of substantially triangular shaped lugs or ears 8- provided with apertures 9 for the reception of links 10 which pass therethrough and serve to secure them to the endless chains 1 extending around the peripheries of the wheel. Onthe inner face of the blade 7 of each of the mud shoes and intermediately of the ends of said shoe, is a lug or plate 11 provided with an aperture 12, these lugs on oppositely disposed shoes projecting toward each other when in position on the tire and offering suspension means I for a chain grip or tread 13. By this means, as shown best in Fig. 2, each of the tire grip treads comprises a pair of oppositely dis posed keels or blades 7 connected by the chain grips 13. It will be appreciated that the inturned lugs 11 with the connecting chain 13, in each instance, constitute a kind of paddle or cog which sinks into the mud and serves to give the wheel an enhanced purchase. At the same time, the blades 7 by reason of their disposition and rigid connection with. the mud shoes, are adapted to grip the walls of a rut and hold the wheel to its course in the manner of the keel of a boat.

What I claim is:

In a device of the character described, the

.combination 'with a pair of endless chains of smaller diameter than the wheel, said chains being arranged on opposite faces of the wheel, of aplurality'of grip treads, each of said grip treads comprising a pair of mud shoes provided with base portionsc'on forming to the tire, .said base portions being connected atboth ends to said endless chains, respectively, a mud blade projecting outwardly from each mud'shoe, said mud blades being arranged parallel to each other, a reinforcing lug integral with said blade and base portion of each shoe, and a grip tread chain'connecting said lugs together.

CORTEZ V. PUGH. In fthe presence of J. B. MEGOWN,

M. G. HAMMON. 

